Add a comment about id3v2_istag function and remove id3v2_tagsize function (was used by demux_flac only).

1 files changed, 4 insertions, 8 deletions

diff --git a/src/demuxers/id3.h b/src/demuxers/id3.h
index 9d08f6817..9b86ec94e 100644
--- a/src/demuxers/id3.h
+++ b/src/demuxers/id3.h
@@ -170,6 +170,10 @@ int id3v2_parse_tag(input_plugin_t *input,
 		    xine_stream_t *stream,
 		    int8_t *mp3_frame_header);
 
+/**
+ * @brief Checks if the given buffer is an ID3 tag preamble
+ * @param ptr Pointer to the first 10 bytes of the ID3 tag
+ */
 static inline int id3v2_istag(uint8_t *ptr) {
   return
     (ptr[0] == 'I') &&
@@ -177,12 +181,4 @@ static inline int id3v2_istag(uint8_t *ptr) {
     (ptr[2] == '3');
 }
 
-static inline uint32_t id3v2_tagsize(uint8_t *ptr) {
-  return
-    ((uint32_t)ptr[0] << 21) +
-    ((uint32_t)ptr[1] << 14) +
-    ((uint32_t)ptr[2] << 7) +
-    (uint32_t)ptr[3];
-}
-
 #endif /* ID3_H */